If you are forging above the dislocation climb temperature you can't put any stresses into the material, I know of no reason to "rest" the material if it's been worked at the proper temperatures.
Blademakers often do a normalization or anneal before they start the stock removal just to catch any places that may not have been up to the correct temp; but this is only done once before you start the cold work. After most of the cold work you generally normalize a couple of times but this is more to refine the grain though it will help clean up any grinding stresses before the hardening steps
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Thomas
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